2629861620 has 48 divisors (see below), whose sum is σ = 7365841728. Its totient is φ = 701084160.

The previous prime is 2629861609. The next prime is 2629861621. The reversal of 2629861620 is 261689262.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2629861621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369132 + ... + 376188.

It is an arithmetic number, because the mean of its divisors is an integer number (153455036).

Almost surely, 2^2629861620 is an apocalyptic number.

2629861620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2629861620 is an abundant number, since it is smaller than the sum of its proper divisors (4735980108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2629861620 is a wasteful number, since it uses less digits than its factorization.

2629861620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13280 (or 13278 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 2629861620 is about 51282.1764358729. The cubic root of 2629861620 is about 1380.3131719408.

The spelling of 2629861620 in words is "two billion, six hundred twenty-nine million, eight hundred sixty-one thousand, six hundred twenty".